command line - Schnipsel

Sunday, April 15. 2012

Kleinigkeiten, die ich immer wieder nachsuchen muss: 

Recursively rename all files containing "dings" into "bums"
for i in `find .` ; do mv $i `echo $i | sed 's/dings/bums/'` ; done 

Recursively list all files '.forward' containing string 'bin'
find -type f -name '.forward' -exec grep -H -n 'bin' {} \;

in eine Logdatei protokollieren, was ein Programm so treibt:
strace -e trace=open -o logfile.log ./xyz

umount /dev/sdc1 scheitert, weil irgendeine Datei offen ist, wer hat sie?  
fuser -m /dev/sdc1

Recursively chmod only directories
find . -type d -exec chmod 755 {} \;

Recursively chmod only files
find . -type f -exec chmod 644 {} \;

Recursively chmod only files with extension .php
find . -type f -name '*.php' -exec chmod 644 {} \;

Recursively find all files > some size
find . -type f -size +10000000k -exec ls -lh {} \;

Recursively find all files > some size named like something and delete
find . -type f -size +100000k -name access.log -exec rm -i {} \;

Password generator
openssl rand -base64 32|head -c 12;echo 

View the contents of a certificate signing request (csr)
openssl req -text -noout -in host.csr
View x509 certificate details
openssl x509 -in filename.crt -noout -text 
View the fingerprint to verify ssh goes to the right machine directly
ssh-keygen -l -f /etc/ssh/ssh_host_rsa_key

alle an einem best Datum geaenderten Dateien auflisten:
ls -AlturR --time-style=long-iso  | grep ^.*2004\-03\-19.2.* >/home/dp/katalog_040319_2x:xx:xx.txt 

Haeufigkeit bestimmter Eintraege in messages nach Tagen sortiert ausgeben
grep DPT=1434 /var/log/messages >/var/log/SQL.slammer.txt
for i in 24 25 26 27 28; do j=`grep Jan\ $i SQL.slammer.txt -c`;echo $i, $j;done

user passwd fuer geschuetztes web-verzeichnis mit .htaccess anlegen
htpasswd -b /usr/local/httpd/.htpasswd user pass 

haessliches XML lesbar formatieren
xmllint –format ugly.xml –output pretty.xml


KDE clipboard history aus cli löschen
qdbus org.kde.klipper /klipper clearClipboardHistory







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